gdb/testsuite/gdb.base/chng-syms.exp

   1 # Copyright 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Author: Paul N. Hilfinger (Hilfinger@gnat.com)
  17
  18 # Test that GDB cleans up properly after errors that result when a
  19 # breakpoint is reset.
  20
  21 if $tracelevel then {
  22         strace $tracelevel
  23 }
  24
  25 set prms_id 0
  26 set bug_id 0
  27
  28 # IDT/SIM apparently doesn't have enough file descriptors to allow the
  29 # problem checked by this test to occur.
  30 if [istarget "mips-idt-*"] {
  31     return 0;
  32 }
  33
  34 set testfile "chng-syms"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37
  38 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DVARIABLE=var1}] != "" } {
  39     untested chng-syms.exp
  40     return -1
  41 }
  42
  43 set oldtimeout $timeout
  44 set timeout 10
  45 verbose "Timeout is now 10 seconds" 2
  46
  47 proc expect_to_stop_here { ident } {
  48     global gdb_prompt
  49     global decimal
  50
  51     # the "at foo.c:36" output we get with -g.
  52     # the "in func" output we get without -g.
  53     gdb_expect {
  54         -re "Breakpoint \[0-9\]*, stop_here .*$gdb_prompt $" {
  55             return 1
  56         }
  57         -re "$gdb_prompt $" {
  58             fail "running to stop_here $ident"
  59             return 0
  60         }
  61         timeout {
  62             fail "running to stop_here $ident (timeout)"
  63             return 0
  64         }
  65     }
  66     return 1
  67 }
  68
  69 gdb_exit
  70 gdb_start
  71 gdb_reinitialize_dir $srcdir/$subdir
  72 gdb_load ${binfile}
  73
  74 gdb_test "break stop_here if (var1 == 42)" \
  75     "Breakpoint.*at.* file .*$srcfile, line.*" \
  76     "setting conditional breakpoint on function"
  77 gdb_run_cmd
  78
  79 expect_to_stop_here "first time"
  80
  81 gdb_continue_to_end "breakpoint first time through"
  82
  83 # Now we recompile the executable, but without a variable named "var1", first
  84 # waiting to insure that even on fast machines, the file modification times
  85 # are distinct. This will force GDB to reload the file on the
  86 # next "run" command, causing an error when GDB tries to tries to reset
  87 # the breakpoint.
  88
  89 sleep 2
  90 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DVARIABLE=var2}] != "" } {
  91
  92 # Complication: Since GDB generally holds an open file descriptor on the
  93 # executable at this point, there are some systems in which the
  94 # re-compilation will fail. In such cases, we'll consider the test
  95 # (vacuously) passed providing that re-running it succeeds as before.
  96
  97     gdb_run_cmd
  98     expect_to_stop_here "after re-compile fails"
  99     gdb_continue_to_end "after re-compile fails"
 100
 101 } else {
 102
 103     gdb_run_cmd
 104     gdb_expect {
 105         -re ".*Program exited normally.*$gdb_prompt $" {
 106             pass "running with invalidated bpt condition after executable changes"
 107         }
 108         -re ".*Breakpoint .*,( 0x.* in)? (\[^ \]*)exit .*$gdb_prompt $" {
 109             pass "running with invalidated bpt condition after executable changes"
 110         }
 111         -re "$gdb_prompt $" {
 112             fail "running with invalidated bpt condition after executable changes"
 113         }
 114         timeout {
 115             fail "(timeout) running with invalidated bpt condition after executable changes"
 116         }
 117     }
 118
 119 }
 120
 121 set timeout $oldtimeout
 122 verbose "Timeout is now $timeout seconds" 2
 123 return 0